Joint for arbors.



H S. DAVIS & J. G. HAYDEN. JOINT FOR. ARBORS.

APPLICATION FILED NOV. 3, 1910.

1,000,238. I Patented Aug. 8,1911.

2 SHBETS-8HBET 1.

ATTORNEYS COLUMIIA ILANOGIAPH C0-- WASHINGTON. D. C-

Patented Aug. 8, 1911.

2 SEEETB-8HEET 2.

Joiz (Yfiayalem By g ATTOHNE Y8 mull WRAP" :0" WASHINGTON. D. C.

UNITED STATES PATENT FFTC.

HERBERT SYLVESTER DAVIS AND JOHN CHANCERY HAYDEN, OF PORT HOPE, ONTARIO,CANADA.

JOINT FOR ARBORS.

Specification of Letters Patent.

Patented Aug. 8, 1911.

Application filed November 3, 1910. Serial No. 590,455.

To all whom it may concern:

Be it known that we, HERBERT S. DAVIS and JOHN C. HAYDEN, subjects ofthe King of Great Britain, and residents of Port Hope, in the Provinceof Ontario and Do minion of Canada, have invented a new and ImprovedJoint for Arbors, of which the following is a full, clear, and exactdescription.

Our invention relates to joints for arbor sect-ions used in casting, andit has for its object to provide joints which will permit the sectionsto be readily separated by striking one of the ends of the arbor andbreaking the wedge member holding the sections together.

Another object of the invention is to so construct the sections thatthey will be held together by a wedge member of combustible or fusiblematerial, the rigidity of which is lost by the heat and by contact withthe metal, thereby permitting the sections to fall apart as the castingis removed from the same.

Still other objects of the invention will appear in the followingcomplete description.

In this specification we will describe the preferred form of ourinvention, it being understood that the scope of the invention isdefined in the appended claims.

Reference is to be had to the accompanying drawings forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the views, and in which Figure l is a planview of the sections with the wedge member disposed at the top of one ofthe sect-ions; Fig. 2 is a sectional view on the line 22 of Fig. 1; Fig.3 is a side view. showing a modified form of the invention, with thewedge member disposed at the side of one of the sections; Fig. 4 is asectional view on the line 44 of Fig. 8; Fig. 5 is a side view ofanother modified form of the invention; Fig. 6 is a sectional view onthe line 66 of Fig. 5; and Figs. 7, 8, 9 and 10 are "iews showing twoadditional modified forms of the invention.

By referring to the drawings it will be seen that there are two sectionsa and b, the section I) having a projecting membero, and the section ashaving a recess (Z which extends through its end and also through itsupper surface. At the top of the section a there are grooves 6, onedisposed at each side of the recess (Z, said grooves being in alinementone with the other, and the side walls ofthe groove divergingdownwardly, a wedge member f being provided which fits the said groovesc. It is our intention to make this wedge member 7 of combustible orfusible material, so that its rigidity will be lost by the great heatbefore or at the time when the casting is removed from the sand. Thesection a has an extension 9, said extension 9 having a depending flangeh which is adapted to engage a surface of the projecting member 0 of thesection b.

The construction shown in Figs. 3 and 4C of the drawings resembles theconstructions shown in Figs. 1 and 2, except that the recess (Z extendsthrough the end of the section a and through a side thereof, instead ofthrough the end and through the upper surface, as in Figs. 1 and 2. Thegrooves e are disposed at the side of the construction shown in Figs. 3and 4, and the extension member 9 is also disposed at the side. Theother members 6 0 f and 71. in Figs. 3 and 4, correspond in all respectswith the similar parts shown in Figs. 1 and 2 of the drawings.

In the construction shown in Figs. 5 and 6 of the drawings,the section ahas a recess cl which extends through its upper and lower surfaces andalso through its end, the end of the section a being bifurcated, therebeing a projecting member 9 which connects the end of the section a,which is separated by the recess 62, there being grooves e in theextreme end of the section a, one groove being disposed at each side ofthe recess d, the grooves c being in alinement one with the other andthe side walls of the grooves e diverging inwardly. The section b has aprojecting member 0 which is disposed substantially at right anglesthereto, there being a shoulder c which is disposed opposite to theprojecting member 0, the shoulder 0 being adapted to engage theextension g, a wedge member f being provided, which fits the grooves e,the wedge member 7 engaging the projecting member 0 and holding it inplace in the recess cl with the shoulder a disposed against the innerside of the extension 9.

In these difierent constructions, when the members are disposed as hasbeen described and the Wedge members f and j" are in position, the twosections will be held rigidly in place by solid contact at the point ofgreatest strain, with the assistance of the wedge member which may bemade of wood, iron or other breakable, combustible or fusible material.The solid arbors which are now being used must be broken to remove themfrom the casting, while other styles of joints must be hammered apart,which is a slow, tedious and expensive methodthen our joint is used, aslight shock at one end of the arbor will break the wedge and thesections may be readily separated, while when the wedge member is madeof combustible or fusible material, the sections will fall apart whilethe casting is being removed from the sand.

In the modified form shown in Figs. 7 and 8 of the drawings, thesections 1 and in resemble the sections Z) and (0 shown in Figs. 1 and 2of the drawings. The section on has a recess in and the section Z has aproj ection a, which is disposed in this recess m. The recess m extendsthrough the end of the section m and also through the top of thesect-ion. There is a channel, or guideway, 971. in the section on,spaced from the top of the section and extending to the recess 172.,this channel, or guideway, m being provided to receive the end of thewedge member 0, this wedge member 0 being adapt ed to contact with theprojection 12. to hold the said projection it against the section on atthe bottonrof the recess m. This wedge member 0 may be made of wood,iron or other breakable, combustible or fusible material, the same as inthe case of the wedge members f and f shown in Figs. 1, 2, 3, 4;, 5 and6 of the drawings.

The construction shown in Figs. 9 and 10 of the drawings resembles theconstruction shown in Figs. 7 and 8, but instead of using the wedgemember 0, which is disposed in the channel, or guideway, m a clampmember m is provided, which is disposed across the recess m and whichhas side flanges m which are disposed around lateral projections in,these clamp members m being made of wood, iron or other breakable,combustible or fusible material, to press against the top of theprojecting portion Z of the section Z Having thus described ourinvention, we claim as new and desire to secure by Letters Patent:

1. In a joint for arbors, a section having a projecting member, a secondsection having a recess to receive the projecting member, an extensionon the second section which is adapted to rest against the projectingmember on the first-mentioned section when it is disposed in the recess,there being a groove in the second section, the plane of which extendsacross the recess, and a wedge member disposed in the groove and acrossthe recess, adapted to engage the projecting member.

2. In a joint for arbors, a section having a projecting member, a secondsection having a recess to receive the projecting member, an extensionon the second section which is adapted to rest against the projectingmember on the first-mentioned section when it is disposed in the recess,there being a groove in the second section, the plane of which extendsacross the recess, and a wedge member of combustible material disposedin the groove and across the recess, adapted to engage the projectingmember.

3. In a oint for arbors, a section having a projecting member, a secondsection having a recess to receive the projecting member, an extensionon the second section which is adapted to rest against the projectingmember on the first-mentioned section when it is disposed in the recess,there being a groove in the second section, the plane of which extendsacross the recess, and a wedge member of material which will lose itsrigidity at a high temperature, disposed in the groove and across therecess and adapted to engage the projecting member.

at. In a joint for arbors, a section having a projecting member, asecond section having a recess adapted to receive the projecting member,there being a member of the second section at a distance from the plane,

at one side of the recess, which is adapted to engage a surface of theprojecting member, there being a groove in the second section at adistance from the said plane of the recess, the plane of the groovebeing disposed across the recess, and a wedge member disposed in thegroove and across the recess.

In a jointfor arbors, a section having a projecting member, a secondsection having a recess adapted to receive the projecting member, therebeing a member of the second section at a distance from the plane at oneside of the recess, which is adapted to engage a surface of theprojecting memher, there being a groove in the second section at adistance from the said plane of the recess, the plane of the groovebeing disposed across the recess, and a wedge member constructed ofmaterial which loses its rigidity at a high temperature, disposed in thegroove and across the recess.

6. In a joint for arbors, a section having a projecting member, a secondsection having a recess adapted to receive the projecting member, anextension on the second section near one of its edges, which is adaptedto engage a surface of the projecting memher, there being a groove inthe second section, the plane of which extends across the recess, and awedge member disposed in the groove and across the recess.

7. In a joint for arbors, a section having a aro'ectin member bent at anan le to the 1 D b section, therebeing a shoulder on the sectionopposite the projecting member, a second section having a'recess adaptedto receive the projecting member, and a member on the second sectionadapted to engage the shoulder, there being a groove in the secondsection, the plane of which is disposed across the recess, and a wedgemember disposed in the groove and across the recess, adapted to engagethe projecting member.

8. In a joint for arbors, a section having a projecting member bent atan angle to the section, there being a shoulder on the section oppositethe projecting member, a second section having a recess adapted toreceive the projecting member and a member on the second section adaptedto engage the shoulder, there being a groove in the second section, theplane of which is disposed across the recess, and a wedge memberconstructed of material which loses its rigidity at a high temperature,disposed in the groove and across the recess, adapted to engage theprojecting member.

9. In a joint for arbors, a section having a projecting member, a secondsection having a recess adapted to receive the projecting member, therebeing a groove in the second section, and a wedge member of materialwhich will lose its rigidity at a high temperature, disposed in thegroove engaging the projecting member.

10. In a joint for arbor-s, a section having a projecting member, asecond section having a recess, adapted to receive the projectingmember, there being a groove in the second section leading to therecess, and a wedge member of material which will lose its rigidity at ahigh temperature, disposed in the groove and across the recess, forengaging the projecting member.

11. In a joint for arbors, a section having a projecting member, asecond section having a recess adaptedto receive the projecting member,and a member of a material which Will lose its rigidity at a hightemperature, secured to the second sect-ion, and disposed against theprojecting member for holding the projecting member in the recess.

12. In a joint for arbors, a section having a projecting member, asecond section having a recess, extending through one of its walls, theprojecting member being normally disposed in the recess, and a member ofmaterial which will lose its rigidity at a high temperature, secured tothe second section, disposed across the recess and in contact with theprojecting member.

13. In a joint for arbors, a section having a projecting member, asecond section having a recess and two flanges, the projecting memberbeing normally disposed in the recess, and a member of material whichWill lose its rigidity at a high temperature, disposed in engagementwith the projecting member and secured to the flanges.

In testimony whereof We have signed our names to this specification inthe presence of two subscribing witnesses.

HERBERT SYLVESTER DAVIS. JOHN CHANCERY HAYDEN. Witnesses:

FREDERICK T. JACKSON, THos. J. JAoKsoN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

